Changes in CAVE Library Version 2.5.4 (installed 29 October 1995)

• *CAVETime is distributed.
• Added support for Ascension Spacepad tracker. Selected by 'TrackerType spacepad' configuration.
• Calibration is now supported for all tracker types rather than just Flock-of-Birds. Calibration data must be in "raw" tracker coordinates, rather than transformed CAVE coordinates.
• Added CAVENETSENSOR(user,sensornum) macro.
• Changed network tracking data functions (CAVENetGetPosition, CAVENetGetOrientation, CAVENetGetVector) to return values in tracker coordinates when not using the _NAV arguments, rather than always returning navigated coordinates.
• Added functions CAVENavLock() & CAVENavUnlock(). These can be used around groups of navigation updates to prevent the drawing processes from getting a partially updated transformation. They do not need to be called around CAVENavTransform().
• Functions which modify the navigation matrix (CAVENavTranslate, CAVENavRot, CAVENavScale, CAVENavLoadIdentity, CAVENavLoadMatrix) will do nothing if called by the slave node of a distributed CAVE. This is because the matrix itself is in Scramnet memory when using Scramnet distribution.
• The tracking process's PID is written to a file (CAVE_TRACKER_PID_FILE, #defined in cave.h), so that external programs can send it a signal (SIGUSR2) to reset.
• Added a lock to control access to the library's internal copy of the tracking data. This will prevent getting partially updated data in the public sensor structs.
• OpenGL library will now open a monoscopic window if a stereo visual is requested but not available.
• Added "Boom3Config" configuration option to specify configuration file for BOOM3 tracking to pass to libboom (replaces overloaded use of CalibrationFile).
• Changed CAVEGetWindowGeometry() to accept NULL pointers.
• Corrected configuration printout of tracker rotations - units are radians.